earth vocab

7. located between the mantle and the outer core.
12. large, rigid pieces if the Earth's lithosphere that move and interact with each other along plate boundaries.
15. new oceanic crust is formed as tectonic plates pull apart and magma rises.
16. extinction events that occur over a long time period.
19. tectonic plates move away from each other, usually forms new crust and rift valleys.
20. deep, elongated depressions in the ocean, often associated with subduction zones.
21. fractures or zones of weakness in the Earth's crust.

1. formed as a result of high temperature and pressure deep within earth changing a rock that already existed.
2. includes the crust and upper part of the mantle, and it is divided into tectonic plates.
3. rock formed when lava or magma cools and hardens.
4. where tectonic plates SLIDE past each other. Causes earthquakes
5. the semi-fluid layer of the mantle where convection currents happen.
6. sudden events that led to a mass extinction.
8. an opening in the Earth's crust through which molten rock is pushed out and creates new rock.
9. a group of the same species living in the same area.
10. name of the ancient supercontinent when it was all one landmass.
11. tectonic plates move toward each other, usually forms mountains and volcanoes.
13. instruments used to measure and record seismic waves.
14. hot material rises, cooler material sink. It drives plate tectonics.
17. forms after weathering and erosion when sediments compact and cement.
18. formed at plate boundaries usually when plates collide.